Access Port Cap Check; Jet Intake Checks; Fuel System Checks - Yamaha 255XE 2021 Owner's/Operator's Manual

Pre-operation checks
A "clean agent" type fire extinguisher is rec-
ommended; a chemical-type fire extinguisher
may not be adequate in this application.

Access port cap check

Make sure that the access port caps are se-
curely installed.
To check the access port caps:
(1) Open the rear platform hatch. (See page
76 for information on the rear platform
hatch.)
(2) Make sure that the access port caps are
securely installed. If they are removed or
are not locked, securely install them.
(See page 139 for information on the ac-
cess port caps.)
1 Access port cap
(3) Close the rear platform hatch.

Jet intake checks

Carefully check the jet intakes under the boat
for weeds, debris, or anything else that might
restrict the intake of water. If the intakes are
clogged, cavitation could occur, reducing jet
thrust, and possibly damaging jet pump
parts.
99
1 Jet intake
In some cases, the engines may overheat be-
cause of a lack of cooling water, and damage
could result. If the jet intakes are clogged,
clean them. (See page 139 for information on
the jet intakes.) WARNING! Rotating parts
could cause severe injury or death. Before
attempting to remove weeds or debris
1
from the jet intakes or impeller areas; shut
off the engines, remove the main switch
keys, and then remove the engine shut-off
cord (lanyard) from the engine shut-off
switch.

Fuel system checks

Check the fuel filler hoses and joints in the
engine compartment for damage, loose-
ness, and signs of leaking. At least annually,
or if a problem is suspected, check the fuel
tank and fuel filler hoses and clamps. Have
a Yamaha Boat Dealer check the fuel tank
and fuel filler hoses and clamps. WARNING!
If there are signs of leaking fuel, do not
operate the boat until the source of the
fuel leak is found and corrected. Gasoline
and its vapors are highly flammable and
explosive.
1